延長(zhǎng)液壓元件的使用壽命 。 開(kāi)式油箱頂部應(yīng)設(shè)置空氣濾清器以及注油器?？諝鉃V清器的過(guò)濾精度應(yīng)與系統(tǒng)精度要求相符合?？諝鉃V清器的壓力損失應(yīng)不影響液壓系統(tǒng)的正常工作。 開(kāi)式系統(tǒng)：泵所輸出的壓力油在完成做功任務(wù)后從執(zhí)行駛器返回油箱。應(yīng)用普遍，但油箱要足夠的大。有油缸的系統(tǒng)肯定是開(kāi)式系統(tǒng)開(kāi)式系統(tǒng)油箱大，油泵自吸性能好。閉式系統(tǒng)中，液壓泵的進(jìn)油管直

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